Temperature

Salinity

Oxygen

AOU

Daily dataset (8AM-10AM from January 2018 to December 2022) - Temperature and Salinity

Missing values : - april 2019

monthly_means_EOL2 <- ungroup(EOL_daily) %>%
  mutate(Month = format(datetime, format="%m")) %>%
  group_by(Month) %>%
  summarise(
    sal_month = mean(salinity, na.rm = TRUE),
    temp_month = mean(temperature, na.rm = TRUE))

monthly_means_EOL2

## # A tibble: 12 × 3
##    Month sal_month temp_month
##    <chr>     <dbl>      <dbl>
##  1 01         38.0       14.6
##  2 02         38.1       13.9
##  3 03         38.0       13.8
##  4 04         37.9       14.9
##  5 05         37.8       18.0
##  6 06         37.8       22.2
##  7 07         37.9       25.9
##  8 08         38.1       26.5
##  9 09         38.2       24.4
## 10 10         38.1       21.2
## 11 11         37.9       18.1
## 12 12         38.0       16.4

##                Slope    SE Slope      P Slope Intercept   SE int.       P int.
## sal_ano   0.01730698 0.003442049 5.484206e-07 -34.96781  6.954476 5.484241e-07
## temp_ano -0.01161644 0.019925688 5.599783e-01  23.47092 40.259700 5.599784e-01
##                  F   df           R2      P value
## sal_ano  25.281821 1676 0.0148604542 5.484206e-07
## temp_ano  0.339875 1710 0.0001987178 5.599783e-01

Temperature

Salinity

Temperature

## 
## Call:
## lm(formula = y ~ x, data = reg_val_ts_temp_eol_less_season)
## 
## Residuals:
##      Min       1Q   Median       3Q      Max 
## -0.34204 -0.03988  0.00446  0.04380  0.20283 
## 
## Coefficients:
##               Estimate Std. Error t value Pr(>|t|)    
## (Intercept) 224.580500   6.298155   35.66   <2e-16 ***
## x            -0.104140   0.003117  -33.41   <2e-16 ***
## ---
## Signif. codes:  0 '***' 0.001 '**' 0.01 '*' 0.05 '.' 0.1 ' ' 1
## 
## Residual standard error: 0.07255 on 258 degrees of freedom
## Multiple R-squared:  0.8122, Adjusted R-squared:  0.8115 
## F-statistic:  1116 on 1 and 258 DF,  p-value: < 2.2e-16

##         tau       slope   intercept 
##  0.04282142  0.04045000 36.35810833

Salinity

## 
## Call:
## lm(formula = y ~ x, data = reg_val_ts_sal_eol_less_season)
## 
## Residuals:
##      Min       1Q   Median       3Q      Max 
## -3.02197 -0.12426  0.03126  0.14767  0.53884 
## 
## Coefficients:
##              Estimate Std. Error  t value Pr(>|t|)    
## (Intercept) 3.791e+01  2.440e-03 15532.81   <2e-16 ***
## x           1.005e-04  2.432e-06    41.31   <2e-16 ***
## ---
## Signif. codes:  0 '***' 0.001 '**' 0.01 '*' 0.05 '.' 0.1 ' ' 1
## 
## Residual standard error: 0.2436 on 39938 degrees of freedom
## Multiple R-squared:  0.04098,    Adjusted R-squared:  0.04095 
## F-statistic:  1706 on 1 and 39938 DF,  p-value: < 2.2e-16

##         tau       slope   intercept 
##   0.1023034   0.0199750 -27.4444783

Oxygen

## 
## Call:
## lm(formula = y ~ x, data = reg_val_ts_oxy_eol_less_season)
## 
## Residuals:
##     Min      1Q  Median      3Q     Max 
## -65.320 -15.280   1.126  15.024  44.776 
## 
## Coefficients:
##               Estimate Std. Error t value Pr(>|t|)    
## (Intercept)  2.417e+02  1.852e-01 1305.08   <2e-16 ***
## x           -7.905e-03  1.846e-04  -42.82   <2e-16 ***
## ---
## Signif. codes:  0 '***' 0.001 '**' 0.01 '*' 0.05 '.' 0.1 ' ' 1
## 
## Residual standard error: 18.49 on 39938 degrees of freedom
## Multiple R-squared:  0.0439, Adjusted R-squared:  0.04388 
## F-statistic:  1834 on 1 and 39938 DF,  p-value: < 2.2e-16

##         tau       slope   intercept 
##  -0.1107562  -1.1655297 732.7343833